Abstract: :
Purpose: To prospectively examine the efficacy, predictabilityand safety of LASIK enhancement after initial hyperopic LASIK.Methods: Sixteen eyes underwent hyperopic LASIK followed byretreatment using the VISX S2 Smoothscan excimer laser. Themean time to retreatment was 10 months. Uncorrected visual acuity(UCVA), manifest refraction, and best-spectacle corrected visualacuity (BSCVA) were evaluated three months after retreatment.The 16 eyes were grouped for analysis based on the refractiveerror prior to retreatment. Seven eyes were treated for residualhyperopia, 4 eyes for consecutive myopia, and 2 eyes for mixedastigmatism. Three eyes underwent enhancement to achieve monovision.Results: Residual hyperopia was corrected to a mean of +.125+ .48, and consecutive myopia was corrected to a mean of -.33+ .38. The eyes with mixed astigmatism were corrected to a meanof +.937 + .75 and those corrected for monovision were correctedto a mean of -1.83 + .88. All eyes but one were corrected towithin 1 D of attempted correction. UCVA was 20/40 or betterin 100% of eyes in which emmetropia was the preoperative goal.No eyes lost two or more lines of BSCVA, and no flap complicationswere seen.Conclusion: Retreatment of patients after LASIKfor hyperopia, whether for residual hyperopia, consecutive myopia,mixed astigmatism, or desire for monovision, is effective, predictable,and safe.